Westerbeke 5kw Diesel Genny stopped

[High Wire]

Originally Posted by Moonzy1

Attachment 77335looked through the parts manual and found a 10amp circuit breaker.

Does anyone know if this would cause total dc shutdown?

should not. that breaker is used for a mod that helped with low voltage to the fuel solenoid. everything still worked but not well. A test light will prove go/no-go.

The site won't let me attach the wiring diagram today.
https://www.westerbeke.com/wiring%20...neer_45633.pdf

[psneeld]

Archie, did you have a remote panel?

Usually engines with remote start and panel have a push button CB someplace on the engine. Mine 8BTD does.

I have but have not done that mod left.

PS Depco pump said my water pump was worn out and not worth rebuilding, yours works great!

[High Wire]

Originally Posted by psneeld

Archie, did you have a remote panel?

Usually engines with remote start and panel have a push button CB someplace on the engine. Mine 8BTD does.

I have but have not done that mod left.

PS Depco pump said my water pump was worn out and not worth rebuilding, yours works great!

Sweet!
Yes mine had a red 20 amp push button breaker right next to the pre-heat relay.
Mine also already had the mod done. If youhave the little box type circuit breaker hanging off the pre-heat relay, its already done.

[foreverunderway]

If this unit uses a fuel solenoid to run the engine, that is the circuit I would be looking at, if a fuse isn't the problem.

Some engines open the fuel flow with a solenoid when the engine key is switched on. Loss of power to this circuit could also be the problem with your light.

[kpinnn]

How about the internal dc battery charger failed so starting battery got low. It operates the lift pump. Now lift pump stops and no fuel to injector pump. Engine stops and will not restart. This happened to me due to failed diode. 8

[OldDan1943]

Originally Posted by kpinnn

How about the internal dc battery charger failed so starting battery got low. It operates the lift pump. Now lift pump stops and no fuel to injector pump. Engine stops and will not restart. This happened to me due to failed diode. 8

Paddle hard!!

[Moonzy1]

Originally Posted by kpinnn

How about the internal dc battery charger failed so starting battery got low. It operates the lift pump. Now lift pump stops and no fuel to injector pump. Engine stops and will not restart. This happened to me due to failed diode. 8

Sorry for late reply.
It has taken me some experimenting to figure this out. And still may be a little fuzzy.

Last battery was shot. So I replaced.
Started rt up and ran fine. Tested w a multi meter all looked ok w house charger on and off.

The issue seems to be an ACR charging isolator between the power distribution panel and the pos+ pole of the battery. When the gen is running and the house mounted charger is on the ACR opens and cuts off charge to the Gen batt as the ACR is also connected to the stbd starter battery so it is protecting it for charging. I dont know why its doing this to the point of wasting the gen battery but that seems to be whats going on.

While offshore, I tested the "charge in" side of the ACR and it was reading 13.7 volts. The "charge out" side was nothing, hence the gen is draining itself out.

My immediate solution was to use a jumper cable from one of the accessory batts on the boat to feed the gen battery and it worked fine for the rest of the trip (20 Hrs)

My work around for this is going to be a separate drymount charger to supply the gen batt directly.

I am going to call Henriques Yachts and see why they do it this way. or perhaps they dont and someone messed w it.

[Moonzy1]

Update:

There is a red DC charge circuit wire that comes off of the AC end of the gen. Had no voltage coming from it so I replaced that wire and all seems to be ok at the moment.

[Moonzy1]

Ran offshore for 24hr trip.

Ran Perfectly. Was the charge wire.

Thanks all for your help

Chris